Results 201 to 210 of about 3,434 (238)

Nucleosynthesis in neutron star atmospheres

Astrophysics and Space Science, 1969
The composition of neutron star atmospheres is calculated as a function of time including effects of diffusion, cooling and thermonuclear reactions. A seven-component nuclear reaction network with includes He4, C12, O16, Ne20, Mg24, Si28 and Fe56 is utilized.
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Atmospheric neutron flux measurements

Journal of Geophysical Research, 1964
The energetic neutron flux at atmospheric depths from 160 to 300 g/cm−2 has been measured over latitudes extending from the equator to 55°N geomagnetic. Comparison of data with previous measurements indicates that at the time of these measurements the neutron spectrum was steeper than that determined by Hess et al. for neutrons of E > 60 Mev but was of
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The URAN array for studying atmospheric neutrons

Bulletin of the Russian Academy of Sciences: Physics, 2017
The URAN array is designed to study primary cosmic rays in the region of the knee by detecting neutrons produced as a result of interaction between EAS particles and nuclei in the atmosphere or matter near the installation. It consists of 72 detectors mounted on the roofs of experimental buildings and combined into cluster structures of 12 detectors ...
D. M. Gromushkin, I. I. Astapov, N. S. Barbashina, F. A. Bogdanov, R. P. Kokoulin, V. V. Ovchinnikov, A. A. Petrukhin, Yu. V. Stenkin, S. S. Khokhlov, I. A. Shulzhenko, K. O. Yurin, I. I. Yashin   +11 more
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Proton deceleration in a neutron star atmosphere

AIP Conference Proceedings, 1982
The energy loss rate of fast protons in a strongly magnetized electron gas has been calculated using the Fokker‐Planck equation to describe the dominant effect of small‐angle Coulomb scattering. Stopping lengths or order 1 gm cm−2 are obtained for 30 MeV protons and the possibility of maser action at the gyrofrequency is indicated.
J. G. Kirk, D. J. Galloway
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Structure in the fast spectra of atmospheric neutrons

Journal of Geophysical Research, 1969
Fast neutron spectrum produced by galactic cosmic ray protons in atmosphere, presenting Monte Carlo transport calculation ...
John W. Wilson, Jules J. Lambiotte, T. Foelsche   +2 more
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Concentration of Slow Neutrons in the Atmosphere

Nature, 1932
RECENT evidence1, 2 of neutral particles of atomic mass and great penetrating power suggests the possibility that terrestial matter may contain similar particles of low (thermal) energies, undetected hitherto by reason of their small interaction with matter. While it has been argued that neutrons of mass 1 would rapidly escape from the earth, one would
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Measurements of the atmospheric neutron leakage rate

Journal of Geophysical Research, 1973
The atmospheric neutron leakage rate in the energy range from 0.01 to 10,000,000 eV has been measured as a function of latitude, altitude, and time with a neutron detector on board the Ogo 6 satellite. The latitude dependence of the neutron leakage is in reasonable agreement with that predicted by Lingenfelter (1963) and Light et al.
J. A. Lockwood, S. O. Ifedili, R. W. Jenkins   +2 more
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Attenuation of neutron monitor radiation in the atmosphere

Canadian Journal of Physics, 1968
An NM-64 neutron monitor latitude survey made by road transport in the summer of 1965 in Canada, the United States, and Mexico was extended, in the summer of 1966, to the western seaboard of the United States and Hawaii. In 1966 in the vicinity of Mt. Hood (2.43 GV), Palomar Mt. (5.71 GV), and Mt.
H. Carmichael, M. Bercovitch, M. A. Shea, M. Magidin, R. W. Peterson   +4 more
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Altitude and latitude effects of atmospheric neutrons

Journal of Geophysical Research: Space Physics, 1986
Ilford G5 emulsions were exposed at six altitudes from 4 to 40 mbar at λ = 7.8°N geomagnetic latitude (NGL). Atmospheric neutrons of 10–200 MeV are studied using three independent parameters. Spectra at 0 mbar were obtained by extrapolation. Energy spectra for neutrons were studied for seven different altitudes from 4 to 40 mbar. Spectra at 0 g/cm² for
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Neutrons Produced in the Atmosphere by the Cosmic Radiations

Physical Review, 1951
The distribution of disintegration product neutrons in the atmosphere has been measured from the geomagnetic equator to 65\ifmmode^\circ\else\textdegree\fi{}N and up to \ensuremath{\sim}220 g-${\mathrm{cm}}^{\ensuremath{-}2}$ air. The measured exponential absorption of the neutron producing radiations in the equilibrium portion of the atmosphere is: $L(
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